Hi Raabiyah,
I was recommended Dr. Markram in Unitas by my Hypnobirthing instructor. One of her previous moms who did the course used him for a successful VBAC at Unitas.
May I ask what your previous problems were? I had a VBAC 4 months ago and have done a bit of research on the topic.
As far as I know the Unitas labor ward is not very "pro-natural" in terms of a "gentle" birthing experience with minimal medical interventions. This does not mean that a VBAC won't be possible, just that you might have to be very stubborn to negotiate the terms you would like to birth.
I am very glad I decided on the Midwife route and I am pretty confident that if I had to birth in a birthing environment under the normal hospital protocol I would have failed. That is just me, doesn't mean it will be the same for you.
Have you seen the other VBAC thread here on moomie?